May is a cold and rainy time for sunbathing in Clatsop County and not really recommended. May is too cold for swimming in Clatsop County for any length of time, unless you have a wetsuit. Consider visiting Clatsop County in the months of June, July, August, September, for the best beach weather. Also consider one of our other suggestions for May.
The average maximum temperature in Clatsop County in May is 16°. The average maximum temperature is 13° in the previous month and 18° in the next month.
The average temperature in Clatsop County in May is 12°. The average temperature ranges is 9° in the previous month and 14° in the next month.
The average minimum temperature in Clatsop County in May is 8°. The minimum temperature is 5° in the previous month and 11° in the next month.
The average day light hours per day in Clatsop County in May are 14.9 and there are 7.9 hours of sunshine per day on average during May making it a quite sunny month with some cloud cover.
The ultraviolet index in Clatsop County in May is typically 7.8 during May. An ultraviolet index reading of 8 to 10 indicates a very high risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 15 minutes. Take extra precautions because unprotected skin and eyes will be damaged and can burn quickly. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.
The average sea water temperature in Clatsop County in May is 8° which is very cold and bracing, it's not recommended you swim with out a full wet suit.
The average total rainfall in Clatsop County in May is 11.1cm and on average there are 18.1 rainy days in May making it a wet time to visit the beach.
The maximum dew point (an indicator of humidity) in Clatsop County in May is 10° which is very comfortable. The dew point is 8° in the previous month and 12° in the next month.
The average maximum relative humidity in Clatsop County in May is typically 94%. The maximum relative humidity is 94.7% in the previous month and 93.5% in the next month.
The average relative humidity in Clatsop County in May is typically 79.2%. The average relative humidity is 78.8% in the previous month and 78.8% in the next month.
The average maximum wind speed in Clatsop County in May is typically 28kmh. The average maximum wind speed is 29kmh in the previous month and 28kmh in the next month.
The average wind speed in Clatsop County in May is typically 12kmh. The average wind speed is 12kmh in the previous month and 12kmh in the next month.
The average wind direction in Clatsop County in May is from the North.
